[Icons NTP] Working prototype to fetch, store, and display big icons.

chrome/renderer/searchbox/searchbox_extension.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/renderer/searchbox/searchbox_extension.h"
 
 #include "base/i18n/rtl.h"
 #include "base/json/string_escape.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
@@ skipping 74 matching lines @@
 v8::Handle<v8::String> GenerateThumbnailURL(
     v8::Isolate* isolate,
     int render_view_id,
     InstantRestrictedID most_visited_item_id) {
   return UTF8ToV8String(
       isolate,
       base::StringPrintf(
           "chrome-search://thumb/%d/%d", render_view_id, most_visited_item_id));
 }
 
+v8::Handle<v8::String> GenerateBigIconURL(
+    v8::Isolate* isolate,
+    int render_view_id,
+    InstantRestrictedID most_visited_item_id) {
+  int size = 48;
+  return UTF8ToV8String(
+      isolate,
+      base::StringPrintf("chrome-search://big-icon/%d/%d/%d",
+                         size, render_view_id, most_visited_item_id));
+}
+
+v8::Handle<v8::String> GenerateFallbackIconURL(
+    v8::Isolate* isolate,
+    int render_view_id,
+    InstantRestrictedID most_visited_item_id) {
+  return UTF8ToV8String(
+      isolate,
+      base::StringPrintf("chrome-search://fallback-icon/,,,,1/%d/%d",
+                         render_view_id, most_visited_item_id));
+}
+
 // Populates a Javascript MostVisitedItem object from |mv_item|.
 // NOTE: Includes "url", "title" and "domain" which are private data, so should
 // not be returned to the Instant page. These should be erased before returning
 // the object. See GetMostVisitedItemsWrapper() in searchbox_api.js.
 v8::Handle<v8::Object> GenerateMostVisitedItem(
     v8::Isolate* isolate,
     int render_view_id,
     InstantRestrictedID restricted_id,
     const InstantMostVisitedItem& mv_item) {
   // We set the "dir" attribute of the title, so that in RTL locales, a LTR
@@ skipping 10 matching lines @@
   std::string direction;
   if (base::i18n::StringContainsStrongRTLChars(mv_item.title))
     direction = kRTLHtmlTextDirection;
   else
     direction = kLTRHtmlTextDirection;
 
   base::string16 title = mv_item.title;
   if (title.empty())
     title = base::UTF8ToUTF16(mv_item.url.spec());
 
+  bool use_big_icon = true;
+
   v8::Handle<v8::Object> obj = v8::Object::New(isolate);
   obj->Set(v8::String::NewFromUtf8(isolate, "renderViewId"),
            v8::Int32::New(isolate, render_view_id));
   obj->Set(v8::String::NewFromUtf8(isolate, "rid"),
            v8::Int32::New(isolate, restricted_id));
   obj->Set(v8::String::NewFromUtf8(isolate, "thumbnailUrl"),
            GenerateThumbnailURL(isolate, render_view_id, restricted_id));
+  if (use_big_icon) {
+    obj->Set(v8::String::NewFromUtf8(isolate, "bigIconUrl"),
+             GenerateBigIconURL(isolate, render_view_id, restricted_id));
+    obj->Set(v8::String::NewFromUtf8(isolate, "fallbackIconUrl"),
+             GenerateFallbackIconURL(isolate, render_view_id, restricted_id));
+  }
   obj->Set(v8::String::NewFromUtf8(isolate, "title"),
            UTF16ToV8String(isolate, title));
   obj->Set(v8::String::NewFromUtf8(isolate, "domain"),
            UTF8ToV8String(isolate, mv_item.url.host()));
   obj->Set(v8::String::NewFromUtf8(isolate, "direction"),
            UTF8ToV8String(isolate, direction));
   obj->Set(v8::String::NewFromUtf8(isolate, "url"),
            UTF8ToV8String(isolate, mv_item.url.spec()));
   return obj;
 }
@@ skipping 1052 matching lines @@
   if (!render_view) return;
 
   bool display_instant_results =
       SearchBox::Get(render_view)->display_instant_results();
   DVLOG(1) << render_view << " GetDisplayInstantResults" <<
       display_instant_results;
   args.GetReturnValue().Set(display_instant_results);
 }
 
 }  // namespace extensions_v8